Home / 78,126.48-107,815.56-43,669.71

Finding the Fourth Proportional to 78,126.48, 107,815.56 and 43,669.71

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Solution

The fourth proportional to 78,126.48, 107,815.56 and 43,669.71 is: 60,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.48 : 107,815.56 = 43,669.71 : x
  2. Step 2: Convert to fraction form
    78,126.48/107,815.56 = 43,669.71/x
  3. Step 3: Cross multiply
    78,126.48x = 107,815.56 × 43,669.71
  4. Step 4: Simplify right side
    78,126.48x = 4,708,274,238.69
  5. Step 5: Solve for x
    x = 4,708,274,238.69/78,126.48
  6. Step 6: Final answer
    x = 60,264.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.